Method and apparatus for forming in ground piles

Hydraulic and earth engineering – Foundation – Columnar structure

Reexamination Certificate

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Details

C405S233000, C405S240000, C405S248000, C166S289000, C166S334100, C166S334400, C166S242800

Reexamination Certificate

active

07726913

ABSTRACT:
The present invention is an apparatus and a method for casting a cementitious or stone pile into the ground. The present invention comprises an exterior driving casing and an interior mandrel acting in cooperation to hold and deliver the pile forming material. A retrievable driving driving shoe is also disclose.

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J & M Foundation Equipment brochure, date unknown,12 pages, Pittsburgh, Pennsylvania, USA.
American Piledriving Equipment, Inc. brochure, Building The World's Foundations, 2006, 48 pages, Kent, Washington, USA.
Tunkers, Vibro Hammer, 2006, 1 page, http://www.pileco.com/eng/tunkers-4-pic.htm.
Tunkers, Vibro Hammer, 2006, 1 page, http://www.pileco.com/eng/tunkers-5-pic.htm.

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